Burglar-alarm and door-closing device



(No Model.)

G F. SNIDER. BURGLAR ALARM AND DOOR CLOSING DEVICE.

No. 475,903. Patented May 31, 1892.

UNITED, STATES PATENT OFFICE.

GABRIEL FINANDEZ SNIDER, OF ABINGDON, IOWA.

BURGLAR-ALARM AND DOOR-CLOSING DEVICE.

SPECIFICATION forming part of Letters Patent N 0. 475,903, dated May 31,1892.

Application filed May 8, 1891. Serial No. 392,088. (No model.)

To all whom it may concern:

Be it known that I, GABRIEL FINANDEZ SN1- DER, a citizen of the UnitedStates of America, and a resident of Abingdomin the county of Jeffersonand State of Iowa, have invented a new and useful Burglar-Alarm andDoor-Closing Device, of which the following is a specification.

My object is to combine automatic bell-ringing mechanism and a devicefor regulating the force thereof with a hinged door in such a mannerthat opening the door will actuate the alarm and at the same time storepower in a spring for automatically closing the door, and I accomplishthe results contemplated as hereinafter set forth.

In the accompanying drawings, Figure l is a bottom view with part of theframe and part of a flange removed, showing the operative mechanism; andFig. 2 is a front view of the complete device applied to a door-frameand connected to a door, as required for practical use.

A is the base.

A are the parallel sides of the frame,havin g at their tops and centersperforations adapted to admit a rotating axle and at one of their endsperforations adapted to admit a roe-lo shaft.

B is an axle having fixed collars or flanges 1, 2, and 3, which formspools upon which a cord and spring are wound.

O is a ratchet-wh eel firmly fixed to the axle B.

D is a pin-wheel placed loosely on the axle B, with pins projecting atregular intervals from its top face and a pawl D on its lower sideengaging with the ratchet-wheel O in such manner as to operate thepin-wheel D when the ratchet-wheel O is moved forward.

F is a spring attached to and coiled around the axle 1-3 on the spoolformed by the flanges 1 and 2 and fastened at one end to the base A ofthe frame.

G is a cord attached to and wound around the axle B on the spool formedby the flanges 2 and 3. It passes over the direction-pulley H and isattached to the door by means of the post J. The cord G and the spring15 are wound around the axle in reverse ways, so that the cord, beingunwound by opening the door, winds up the spring, which in turn winds upthe cord when the tension is released, and thereby automatically closesthe door.

J 2 is a wooden strip fastened to the top of.

L is a spring-actuated bell-striker, which passes through the rock-shaftK, so that its lower end engages with the base of the frame, and on itsother end is a knob, which strikes against abell when the rock-shaft isoperated.

L is a bell of common form attached to the supporting-post M.

I claim as my invention- An automatic alarm consisting of an arbormounted on a base adapted to be fixed. to a door-frame, a coiled springand clock-work mechanism connected with said arbor and adapted toactuate a bell-striker, and a bell and striker mounted on the same baseand said base fixed to a door-frame above the top of a door hinged tothe door-frame, a wooden strip or bar fixed to the top portion of a doorhinged to the door-frame and said bar provided with perforations toadmit a'pin, and a movable wooden pin connected with said arbor by meansof a cord, all arranged and combined with a door-frame and door tooperate in the manner set forth, for the purposes stated.

GABRIEL FINANDEZ SNIDER.

Witnesses:

GEO. W. CALDWELL, S. D. KIRK.

